My 2.9 engine is knocking!!! i need some suggestions on how to stop it

I have recently took my 1990 Ranger to a mechanic to get the fuel gauge fixed and after he got done he told me that the reason my engine is knocking is the lifters. i told him that my dad had them adjusted before but the just stopped for while and went back to knocking. He told me that one way of fixing it is adjusting the lifters by using loctite on the adjusting bolts so they stay in place. i want to know if that is the best way to stop it from knocking or is there a better way to do it

__________________~Villy#74~

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i hate to sound dumb but what is the difference between a tick and a knock?

ticking is within the valvetrain. kinda like a worn pushrod hitting the rocker arm because of increased clearance.

Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.